ASTROSAT CZTI

Data Quality Report

Orbit 20200305_A07_165T01_9000003558_level2

Creation date: 2020-06-09T10:30:19.593931
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A07_165T01_9000003558cztM0_level2_bc.evt modeM0/AS1A07_165T01_9000003558cztM0_level2_quad_clean.evt
Size (bytes)19,112,713,9209,416,825,280
Size17.8 GB 8.8 GB
Events in quadrant A104,966,88965,341,849
Events in quadrant B114,850,49766,229,869
Events in quadrant C115,692,75663,153,239
Events in quadrant D213,035,69660,027,973

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07660
B07660
C07660
D07660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09933210
B010304360
C010363860
D013915270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048520
B048520
C048520
D048520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A47663544150.926285%
B47663561951.299737%
C47663590371.896000%
D476635321916.753805%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 553034 476640 195 195 0.04% 0.04%
B 553034 476635 101 101 0.02% 0.02%
C 553034 476633 856 856 0.15% 0.18%
D 553034 476579 4203 4203 0.76% 0.88%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 6 16 2677861 468.45 26344 25979 5661.0
A 13 254 737674 125.72 26344 25979 5661.0
A 3 1 399674 66.01 26344 25979 5661.0
B 0 197 6186807 1245.22 26516 25999 4947.6
B 0 189 1776595 353.83 26516 25999 4947.6
B 7 202 839355 164.4 26516 25999 4947.6
C 7 247 8970645 1497.94 25237 25246 5971.8
C 0 239 4216762 701.89 25237 25246 5971.8
C 10 9 3488182 579.88 25237 25246 5971.8
D 8 195 42862758 7223.43 25243 24442 5930.5
D 12 218 39868865 6718.6 25243 24442 5930.5
D 1 52 19454502 3276.31 25243 24442 5930.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter